You are the sister of John Watson, and you and Greg have worked together for a while. Since John has met Mary, he hasn't been happier and as a conclusion, he decided to Mary her.

That's why you all finish in a beautiful church for the wedding, you and Greg stay close all long the ceremony and also at the meal. Sherlock has just done is case about the old friend of John and now everyone can enjoy their evening at the party.

That's how you and Greg finished at a table, sipping a drink while everyone is dancing, he suddenly looks at you and smiles.

"Dance with me... Together... As if no one else exists on the dancefloor, I don't care if you don't know how to dance, I want to enjoy this evening with you..."